GB1023478A - Advanceable roof support assembly - Google Patents
Advanceable roof support assemblyInfo
- Publication number
- GB1023478A GB1023478A GB35330/63A GB3533063A GB1023478A GB 1023478 A GB1023478 A GB 1023478A GB 35330/63 A GB35330/63 A GB 35330/63A GB 3533063 A GB3533063 A GB 3533063A GB 1023478 A GB1023478 A GB 1023478A
- Authority
- GB
- United Kingdom
- Prior art keywords
- line
- valve
- pressure
- valves
- jack
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000012530 fluid Substances 0.000 abstract 1
- 238000005065 mining Methods 0.000 abstract 1
- 230000007935 neutral effect Effects 0.000 abstract 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
- E21D23/16—Hydraulic or pneumatic features, e.g. circuits, arrangement or adaptation of valves, setting or retracting devices
- E21D23/26—Hydraulic or pneumatic control
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Fluid-Pressure Circuits (AREA)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DENDAT1249796D DE1249796B (de) | 1963-09-06 | ||
GB35330/63A GB1023478A (en) | 1963-09-06 | 1963-09-06 | Advanceable roof support assembly |
US394359A US3319529A (en) | 1963-09-06 | 1964-09-03 | Advanceable roof support assemblies |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB35330/63A GB1023478A (en) | 1963-09-06 | 1963-09-06 | Advanceable roof support assembly |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1023478A true GB1023478A (en) | 1966-03-23 |
Family
ID=10376513
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB35330/63A Expired GB1023478A (en) | 1963-09-06 | 1963-09-06 | Advanceable roof support assembly |
Country Status (3)
Country | Link |
---|---|
US (1) | US3319529A (de) |
DE (1) | DE1249796B (de) |
GB (1) | GB1023478A (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2118603A (en) * | 1982-04-06 | 1983-11-02 | Gewerk Eisenhuette Westfalia | Control apparatus |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE794193A (fr) * | 1972-03-16 | 1973-05-16 | Gewerk Eisenhuette Westfalia | Systeme de commande sequentielle pour le ripage automatique d'un groupe d'elements de soutenement |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2112466A (en) * | 1935-11-16 | 1938-03-29 | Heil Co | Grader control mechanism |
US2607197A (en) * | 1949-08-06 | 1952-08-19 | Keller Tool Co | Sequential motor operation under control of individual, fluid actuated, relieved pressure valves |
US2859022A (en) * | 1955-04-04 | 1958-11-04 | Dowty Mining Equipment Ltd | Hydraulic roof supports and conveyor feed jacks |
GB991009A (en) * | 1962-06-07 | 1965-05-05 | Dowty Mining Equipment Ltd | Mining apparatus |
GB990837A (en) * | 1963-04-05 | 1965-05-05 | Dowty Mining Equipment Ltd | Roof support assembly |
-
0
- DE DENDAT1249796D patent/DE1249796B/de active Pending
-
1963
- 1963-09-06 GB GB35330/63A patent/GB1023478A/en not_active Expired
-
1964
- 1964-09-03 US US394359A patent/US3319529A/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2118603A (en) * | 1982-04-06 | 1983-11-02 | Gewerk Eisenhuette Westfalia | Control apparatus |
Also Published As
Publication number | Publication date |
---|---|
US3319529A (en) | 1967-05-16 |
DE1249796B (de) | 1967-09-14 |
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